Plow attachment for tractors



1940. w. B. A. COOPER 2,218,948

FLOW ATTACHMENT FOR TRACTORS Filed latch 25, 1940 3 Sheets-Sheet 1 1nventor MLL/AM BUCKNER 4. COOPER,

A itornc y Oct-22, 1940. w. B. COOPER 2,218,948

PLOW ATTACHMENT FOR TRACTORS Filed larch 25, 1940 5 Sheets-Sheet 2 Inventor W/LL/AM BUCKNEE ,4. (00/ 52,

By Ana A iiomey Oct. 22, 1940. w. A C OP EFQ 2,218,948:

PLOW ATTACHMENT FOR TRACTORS Filed larch 25, 1940 3 Sheets-Sheet 3W/LL/AM BUCK/VE/Z A; COOPER,

- By 2W;

A itorney 40 In these Patented Oct. 22,1940" j RLQWQAT'ILKGHIVIENT FORmemes William scanner 4. Cooper, canard; s. mu. I v i'7sppiibatiofiinmhz;} 194o;s mrmazsgsse' I tractor having but one front wheel; o

This invention also consists in certainqiother l5 Ieatures' ofconstruction and the combination and arrangement 01. the several partsto be herelinlatter fully described, illustratedin the accompanyingdrawings and specificallypointed out in the appended claims.

29 In describing the inmate in an e ence wi'll be had to theaccompan ingdrawings wherein like characters denote dikejor corresponding partsthroughoutthe several views, and

in which: a

25 .Figurel is an elevationlot" inventionthereon.

Figure .2 is a top pl n view of Figure Figure 3 s a a l v fl mlf iew-ipi as manually controlled-means {or raising and low- I 30 ering theplows;-

ure3. v K v Figure5isafront view of Figure1.

Figure 6 is a section on the lin 35'ure2. v T v Figure 7 is a" sectionon the line l- -i'l of Figure5. a. a "j I .Figu-reS is asectiononitheflline 8- -1B'.df Fig-1 we 5. l v. a v

' means are attached in any suitablemanner'. In

carrying out my invention Ip providel a cross bar 45 I which is suitablyattached to the front of the tractor in horizontal position with itsends extending beyond the sides of the tractor and a \bearing block 2 isbolted to each end of the bar I by four bolts 3 and the rear or eachblock has 60 a tongue 4 thereon fitting in-a groove in the-bar 55 isrotatably supported .by the bearing blocks. A

Figure 4 is a section on ot'Fi sewage the letter A; indicates fa;tractor of any suitable, type and which is used P ot 97 4 1);

pair, of sleeves Ii is adjustably securedflto shaft, '6 by each sleevehaving a square bore through which the-shatt passes with a set screw. 8fastening the "sleeve iniradjusted positioneon the shaft; Each sleeveisqprovided with a tor-,7. 6 wardly extending socketed part I and aspring latch member 9 is pivoted to. the top par-tact the part It, Ashank Ithaca-curved upper portion to make its extremity extendhorizontally and, this extremity ntsinthesocket member I and 10 it-h-as.a keeper recess ll therein for receiving the latch member-{whichpassesthrough a. hole; a

in the socketed part. H 4 The major portion 01 each shankextendsdownwardly in a vertical positionand a plow or shovel ,I2 is detachablysecured rto the; lower end fofeach shank. The sleeves I are;

to begadjusted on-the vshaft 6 so thattheplcws l2 will come .in front ofthe front wheels W pi! the tractorsoj-that the iurrows made by theseplows will formtr-acks for the front wheels. If the attachment is usedon a tractor having-but, one front wheel thenone of the shanks i0 is Iremoved-by releasing thelatch 9 and --then-t he other sleeve isadJusted-toplace the'plow carried v he b i e t y'in ron said in l wh elmake ya furrow to be entered by thewheel JAn upright I! is carried byeach end portion 01 the shaft 8 and an'eye bolt l5 passes through. anintermediate part of each upright andhasa spring [6 connected therewiththe spring also being connected to an eye bolt" I1 carriedby a lcn acketl8 .attached to a side part otthetracg meme eye boltv being adjusted bymean sflof, a" nut, l9. tofregulate. the tension of each spring J6.

' As will be seen these springs 16 .tendto flmovie 3 the shaft 8 inadirection to lift lthe plov isup ward'ly and'forwardly. e I j a Theupper endoteach member I4 is" termed} with anotch2ll inwhtch isrotatablysupported" a small rollerK2l A rod 22 has the clamping I plates23 connected to-itsiorward end and these plates are to be engaged witheitheron of the] rollers 2| according to which sldelthe' operating meansare to 'be placed; I'I'heIrod 22 extends" rearwardly and is or tubularconstruction as? shownin Figure 4 with a cap 24 attached to its rearend. A long rod 25 passes through the cap and has a nut 28 threaded onits front end and a coil spring 21 is placed on the rod and bearsagainst the nut 26 and the cap 24. A part of I. These ibearing blockshave journal openings therein of circular shape in cross section toreceive the rounded ends 5 of a shaft '8 which is of square shape incross section so that the shaft the rod 25 rearwardly of the cap 24 isformed with the threads 28 to receive'a nut' 29 and the offset rear endof the. rod is connected to a pedal 30 by a pivot bolt-ll the pedalbeing pivoted as at to the quadrant 3: attached to a rear part of thetractor in a position where the driver occupying the seat 34 can placehis foot on the pedal. The usual latch means 35 is fastened to the pedaland cooperates with the toothed part of the quadrant to hold the pedalin adjusted position.

As before stated, the springs l6 tend to hold the parts in a positionwith the shovels in raised position and out of the ground'but when theoperator wishes to cause the shovels or-plows to engage the'ground thenhe pushes forward the pedal 30 which causes the nut to engage thecap 24and pushes the rod 22 forwardly which, in turn, causes the upright H towhich it is connected to partly rotate the shaft 6 in a direction tocause the shaft to engage the shovels or plows I2 with the ground. Thepedal is fastened in its forward position by the latch 35 and thus theshovels will be engaging the ground during forward travel of the tractoruntil the pedal is released by moving of the latch 35 to inoperativeposition by the foot. Then the springs l6 will raise the shovels out ofthe ground, the spring 2'! simply acting as a shock absorbing spring forthe foot operated part.

As before stated the shovels can be adjusted so that they will makefurrows directly in front of the front wheels or one shovel can beremoved when a single wheel is used on the tractor and this shoveladjusted so that it will make-a furrow for said single wheel. By havingthewheels running in the furrows the tractor is more'easily steered andit will run more smoothly and do a more eflicient job of cultivationthan where the front wheels run on uneven ground and on top of theground.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall within the scope of the appended claims. i

Having described the invention, what is claimed as new is:

1. An attachment for a tractor comprising a tractor comprising a shaftsupported for rocking movement in front of the tractor, sleeves slidablyarranged on the shaft, means for fastening.

the sleeves in adjusted position on the shaft, each sleeve having aforwardly extending socketed part, shovel carrying shanks having theirupper ends extending rearwardly and horizontally and entering thesockets, latch means for holding said ends of the shanks in the sockets,

. an arm extending upwardly from the "shaft and manually operated meansconnected with the arm for rocking the shaft.

2. An attachment for a tractor comprising a shaft supported for rockingmovement in front of the tractor, sleeves slidably arranged on theshaft, means for fastening the sleeves in adjusted position on theshaft, each sleeve having a forwardly extending socketed part, shovelcar rying shanks having their upper ends extending rearwardly andhorizontally and entering the sockets, latch means for holding said endsof the shanks in thesockets, an arm extending upwardly from the shaftand manually operated means connected withthe arm for rocking the shaft,and spring means connected with the arm for normally holding the partswith the shovels out of the ground.

3. An attachment for a tractor comprising a bar extending across thefront of the tractor, bearing blocks connected with the ends of the bar,a shaft having rounded ends journaled in said blocks, the rest of theshankbeing of noncircular shape in cross section, sleeves havingnon-circular bores through which. the shaft passes, means for fasteningthe sleeves in adjusted position on' the shaft, each sleeve having aforwardly extending socketed part, plow carrying shanks havinghorizontal upper ends for engaging the sockets in said parts, latchmeans for holding the said ends'in said sockets, upwardly extending armsconnected with the shaft, spring means connecting the arms with parts ofthe tractor for holding the parts with the plows out of .the ground, apedal adjacent the driver's seat of the tractor and linkage connectingthe pedal with one of the arms for causing a forward movement of thepedal to move the parts 7 to a position to cause the plows to enter theground.

4. An attachment fora tractor comprising a bar extending across thefront of the tractor, bearing blocks connected with the ends of the bar,a shaft having rounded ends journaledin said blocks, the rest of theshank being of noncircular shapein cross section, sleeves havingnon-circular bores through which the shank passes, means for fasteningthe sleeves in adjusted position on the shaft, each sleeve having aforwardly extending socketed part, plow carrying shanks havinghorizontal upper ends for engaging the sockets in said parts, latchmeans for holding the said ends in said sockets, upwardly extending armsconnected with the shaft, spring means connecting the arms with parts ofthe tractor for holding the parts with the plows out of the ground,'apedal adjacent the drivers seat WILLIAM BUCKNER A. COOPER.

.of the tractor and linkage connecting the pedal

